angular

问题 So I'm a little new to observables, I'm struggling with a scenario, and I thought it might be a good candidate for an SO question. Here we go... The scenario is this: I have a drop-down field; when it is changed, I want to check a condition based on the previous and new values of the field request from the user a confirmation if the condition passes, and ... then revert the value of the field if the user did not confirm. Here's the code with comments: ngOnInit(): void { // I am waiting for my

问题 I would like to append parameters to url: let params = []; params["p1"] = "value1"; params["p2"] = "value2"; this.location.go(this.router.createUrlTree([this.data]).toString()); When I have this url localhost/project/page its work correct. But when I have url localhost/project/page/id after append url is localhost/project/page/p1=.. I need to keep the parameter in url and add the new one. thanks for advices 回答1: When you click the button, call a method like the one below? Here this.router is

问题 I have two URLSearchParams objects, and I want to make a third one of those two combined. For example, I could have let params1 = new URLSearchParams(); params1.set('page', 'one'); params1.set('size', 'hundred'); let params2 = new URLSearchParams(); params2.set('orderBy', 'size'); params2.set('order', 'asc'); let params = params1 + params2; // yes, that's illegal, but how to do that? and I need to have all 4 parameters in the params object. I wanted to iterate through the object key-value

问题 I would like to append parameters to url: let params = []; params["p1"] = "value1"; params["p2"] = "value2"; this.location.go(this.router.createUrlTree([this.data]).toString()); When I have this url localhost/project/page its work correct. But when I have url localhost/project/page/id after append url is localhost/project/page/p1=.. I need to keep the parameter in url and add the new one. thanks for advices 回答1: When you click the button, call a method like the one below? Here this.router is

问题 I have two URLSearchParams objects, and I want to make a third one of those two combined. For example, I could have let params1 = new URLSearchParams(); params1.set('page', 'one'); params1.set('size', 'hundred'); let params2 = new URLSearchParams(); params2.set('orderBy', 'size'); params2.set('order', 'asc'); let params = params1 + params2; // yes, that's illegal, but how to do that? and I need to have all 4 parameters in the params object. I wanted to iterate through the object key-value

问题 I am working on a angular app. I am using mat-form-field as follows. <mat-form-field appearance="fill"> <mat-label id="title">{{ title }} </mat-label> <input formControlName="title" matInput id="title" (click)='updateValue("title")' readonly> </mat-form-field> I get a rectangle shaped form field with above code. When I hover over the bottom line of mat form field like when I take my mouse on bottom of a particular form field I want to change color. For it I am suing following CSS .mat-form

问题 I am working on a angular app. I am using mat-form-field as follows. <mat-form-field appearance="fill"> <mat-label id="title">{{ title }} </mat-label> <input formControlName="title" matInput id="title" (click)='updateValue("title")' readonly> </mat-form-field> I get a rectangle shaped form field with above code. When I hover over the bottom line of mat form field like when I take my mouse on bottom of a particular form field I want to change color. For it I am suing following CSS .mat-form

问题 I'm currently building a little angular page. In this page I'm using ngx-cookieconsent (https://www.npmjs.com/package/ngx-cookieconsent) for handling the cookies. Everything works but now I'm a little bit confused. I've set it up with the parameter opt-in but when I visit the page first, there are already cookies stored in the browser even if I press decline or nothing: Thats really confusing. I've also tried subscribing to the status change of the consent: this.statusChangeSubscription =

问题 I want to access my angular service from export function. I read all the related questions form SO, however for some reason the solutions doesn't work for me. I added the app-injector.ts helper. It looks like this: import {Injector} from '@angular/core'; /** * Allows for retrieving singletons using `AppInjector.get(MyService)` (whereas * `ReflectiveInjector.resolveAndCreate(MyService)` would create a new instance * of the service). */ export let AppInjector: Injector; /** * Helper to set the

问题 I am having data related to cars coming from an API call which I am displaying in angular ag-grid. I have some default and some customized options which user can select of his own choice. I also need to provide user an option to select the customized option. I am giving user an edit option inside the ag-grid if he clicks on edit one mat-dialog will open up with all customized options with checkbox user can select the option by clicking on the checkbox. if user next time try to edit the